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Summary of Contents for Extech Instruments 380940
- Page 1 User's Guide True RMS AC / DC Power Clamp Meter Model 380940...
- Page 2 Introduction Congratulations on your purchase of the Extech 380940 True RMS Watt Clamp DMM. This meter combines multimeter and clamp meter functionality in one convenient meter. Careful use of this meter will provide years of reliable service. Safety 1. NEVER exceed the specified voltage/current maximum 2.
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Page 3: Meter Description
Function select dial HOD button freezes the displayed reading MAX/MIN button – Press to track and view highest and lowest readings LCD Display with function indicators and bargraph 10. COM input jack (for black test lead) Function Select Switch 380940-EU-EN-V4.1-4/12... -
Page 4: Display Icons
The bargraph is to be interpreted based on the range the meter is in while the measurement is being made. If the bargraph shows 40 segments lit, then the signal is at the highest end of the meter’s present range. 380940-EU-EN-V4.1-4/12... -
Page 5: Operation
2. Press the DCA zero key to null the meter display. 3. Press the jaw trigger and clamp around a single conductor fully enclosing it. Do not allow a gap between the two halves of the jaw. 4. Read the DCA value on the LCD. 380940-EU-EN-V4.1-4/12... - Page 6 20A reading is zeroed and a 30A reading is subsequently measured, the LCD will display 10A. 3. To return to normal operation, press and hold the zero key for 2 seconds. 4. Note that Relative mode is not available if MIN/MAX mode is enabled. 380940-EU-EN-V4.1-4/12...
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Page 7: Specifications
Power consumption Approximately 10mA DC Weight 190g (6.7 oz) including battery Dimensions 183 x 63.6 x 35.6mm (7.2 x 2.5 x 1.4”) (HWD) Jaw opening 23mm (0.9”) maximum conductor size Standards IEC 1010 Category III 300V, Category II 600V 380940-EU-EN-V4.1-4/12... - Page 8 10Hz - 10kHz 0.01- 10Hz Sensitivity 10V Frequency ±(0.8% + 2dgts) 600V AC Copyright © 2012 Extech Instruments Corporation (a FLIR company) All rights reserved including the right of reproduction in whole or in part in any form. www.extech.com 380940-EU-EN-V4.1-4/12...
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